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Winterize distilled water, how to? #4616657
12/28/17 01:12 PM
12/28/17 01:12 PM
Joined: Aug 2004
Posts: 1,467
San Antonio, Texas
sasilverbullet Offline OP
sasilverbullet  Offline OP
Joined: Aug 2004
Posts: 1,467
San Antonio, Texas
I'm running straight distilled water in my windshield washer fluid reservoir.

I want to "winterize" it down to about 15 degrees.

Can I just add some kind of alcohol? If so, what kind and mix ratio?

I don't want to use the off-the-shelf stuff from the parts store.


03 Porsche 911 Liqui Moly Leichtlauf High Tech 5w-40 & Mahle filter
14 Honda Accord 4dr EX-L 4cyl-M1 0W-20 & WIX XP
02 Chevy 5.7L van-GTX HM 10W-40 & WIX filter
Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616661
12/28/17 01:24 PM
12/28/17 01:24 PM
Joined: Nov 2008
Posts: 3,157
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline
Joined: Nov 2008
Posts: 3,157
Oshawa, Ontario Canada

Add one cup isopropyl (rubbing) alcohol to any of the first three methods if temperatures drop below freezing. If your winters are mild, use 70% rubbing alcohol. If you experience extreme cold weather, use 99% instead.

Taken from this link... Do you know how much water you already have in the reservoir?

https://www.wikihow.com/Make-Windshield-Washer-Fluid

Last edited by JC1; 12/28/17 01:25 PM.

2015 Grand Caravan SXT Plus 5w-20 PPPP/Fram Ultra Filter
1997 Honda Civic CX 5w-30 Shell Conventional/Fram Ultra Filter
Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616666
12/28/17 01:31 PM
12/28/17 01:31 PM
Joined: Apr 2012
Posts: 5,160
MA
Wolf359 Offline
Wolf359  Offline
Joined: Apr 2012
Posts: 5,160
MA
It probably won't make financial sense. Windshield washer fluid is a mixture of methanol and water. The lower the freezing point, the more methanol. We get a mixture here that good to -20F and it's about $1.58 at Walmart. Buying methanol or isopropyl alone is probably going to be a lot more expensive. Isopropyl is easier to get, but it may damage the paint which is why methanol is preferred. Methanol is supposed to be bad for the environment which is why they stop selling it around here during the summer and only do the winter mix in cold weather.

Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616671
12/28/17 01:41 PM
12/28/17 01:41 PM
Joined: Dec 2016
Posts: 2,163
VA
maverickfhs Offline
maverickfhs  Offline
Joined: Dec 2016
Posts: 2,163
VA
Yes, also usually on specials one can get washer fluid for ~$1.

Even Walmart has them for cheap.

But isopropyl is a safe choice, provided if that's the ONLY one option.


2006 Civic EX 202K/AT
2006 Acura TSX 180K/AT
Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616672
12/28/17 01:42 PM
12/28/17 01:42 PM
Joined: Jan 2009
Posts: 2,378
wi
dave123 Offline
dave123  Offline
Joined: Jan 2009
Posts: 2,378
wi
Vodka

Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616676
12/28/17 01:52 PM
12/28/17 01:52 PM
Joined: Dec 2016
Posts: 6,259
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,259
Waco, TX
Isopropyl alcohol should not harm the paint in any way.

Aircraft use washer fluid made from isopropyl, not methanol. It's less corrosive.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616683
12/28/17 01:58 PM
12/28/17 01:58 PM
Joined: Mar 2004
Posts: 20,758
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 20,758
Upstate NY
I buy orange Prestone deicer and run it year round. Why bother to mix your own? I thnk it has ammonia in it also. Or it seemed to smell like ammonia when I was filling the reservoir.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616701
12/28/17 02:14 PM
12/28/17 02:14 PM
Joined: Oct 2014
Posts: 1,224
NoVA
Jimzz Offline
Jimzz  Offline
Joined: Oct 2014
Posts: 1,224
NoVA
Why are you running pure water? The alcohol is not just for freeze protection but also to control bacteria and mold growth.

But as said you can just buy the -20 at walmart for less than $1.60. You can thin it out 1 to 1 so 2 gallons of washer fluid for less than $1.60.

https://www.walmart.com/ip/Super-Tech-Winter-Formula-Windshield-Washer-Fluid/17179676


yup
Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616711
12/28/17 02:25 PM
12/28/17 02:25 PM
Joined: Mar 2008
Posts: 6,834
USA
slacktide_bitog Offline
slacktide_bitog  Offline
Joined: Mar 2008
Posts: 6,834
USA
what's wrong with off-the-shelf washer fluid? smile

Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616714
12/28/17 02:27 PM
12/28/17 02:27 PM
Joined: Jul 2014
Posts: 365
Ceciltucky Maryland
Oldtom Offline
Oldtom  Offline
Joined: Jul 2014
Posts: 365
Ceciltucky Maryland
I am really cheap, but, the premium antifreeze that prevents refreezing works great. The premium antifreeze contains ethylene glycol which does not evaporate like alcohol. Prestone makes this, among others. The worlds cheapest human says go ahead and treat yourself :-)

Re: Winterize distilled water, how to? [Re: slacktide_bitog] #4616718
12/28/17 02:29 PM
12/28/17 02:29 PM
Joined: Mar 2014
Posts: 3,268
NJ
Leo99 Offline
Leo99  Offline
Joined: Mar 2014
Posts: 3,268
NJ
Originally Posted By: slacktide_bitog
what's wrong with off-the-shelf washer fluid? smile


I seem to remember a very similar post about not wanting to use off the shelf washer fluid a year or two ago. I asked the same question as you. The OP got quite testy but never stated what he had against the blue stuff.


Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles
2004 Rav4 359,000 miles
2015 Camry 59,000 miles
Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616821
12/28/17 03:51 PM
12/28/17 03:51 PM
Joined: Jun 2002
Posts: 12,521
The Motor City
Kestas Offline
Kestas  Offline
Joined: Jun 2002
Posts: 12,521
The Motor City
I switch out seasonally so I don't have to use the bottled washer fluid in the summer and save some money. I've learned not to use blue dishwashing soap for the summer to avoid confusion. Any other color soap but not blue.

To the OP, If you want to add alcohol to the existing water mix or even if you use the bottled fluid, make sure to push the new fluid through so the existing water doesn't freeze in the lines.

Re: Winterize distilled water, how to? [Re: Oldtom] #4616905
12/28/17 05:19 PM
12/28/17 05:19 PM
Joined: Apr 2012
Posts: 5,160
MA
Wolf359 Offline
Wolf359  Offline
Joined: Apr 2012
Posts: 5,160
MA
Originally Posted By: Oldtom
I am really cheap, but, the premium antifreeze that prevents refreezing works great. The premium antifreeze contains ethylene glycol which does not evaporate like alcohol. Prestone makes this, among others. The worlds cheapest human says go ahead and treat yourself :-)


I can be cheap too, but usually antifreeze is more than windshield washer fluid. There's really no cheaper alternative than the stuff you buy at the store. Only really cheap alternative is to reduce the concentration of methanol by adding water to it to lower the percentage of methanol and to increase the freezing point.

Re: Winterize distilled water, how to? [Re: sasilverbullet] #4616954
12/28/17 06:19 PM
12/28/17 06:19 PM
Joined: Mar 2005
Posts: 1,755
Michigan
Greggy_D Offline
Greggy_D  Offline
Joined: Mar 2005
Posts: 1,755
Michigan
The Prestone 3-in-1 is 3 bucks at WalMart. Why use anything different all year round?


Greggy D.

Re: Winterize distilled water, how to? [Re: Greggy_D] #4616957
12/28/17 06:31 PM
12/28/17 06:31 PM
Joined: Jan 2008
Posts: 728
indianapolis in
bmwjohn Offline
bmwjohn  Offline
Joined: Jan 2008
Posts: 728
indianapolis in
I use the Rain-X or the Meijers imitation Rain x washer fluid that supposedly doesn't freeze and also coats the glass with a rain x type substance. Seems to help a little, not stunning. $2.50 to $3.00 typically per gallon.

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